EP 3960485 A1 20220302 - MECHANICAL PENCIL
Title (en)
MECHANICAL PENCIL
Title (de)
MECHANISCHER STIFT
Title (fr)
PORTEMINE
Publication
Application
Priority
- JP 2019086686 A 20190426
- JP 2020006910 W 20200220
- JP 2018233668 A 20181213
Abstract (en)
A mechanical pencil 1 includes a ball chuck 11 allowing advance of the lead 7 and preventing retraction, a rotation drive mechanism 30 having a rotary part 40 and receiving an axial direction retraction operation due to writing pressure received by the lead held by the ball chuck and an axial direction advance operation due to release of the writing pressure to drive the rotary part to rotate in one direction, a feed cam face 70 having a ring-shaped cam face 62 vertical to the axial direction and an axial direction step part 71 provided at the ring-shaped cam face, and a slider 9 having an abutting part 9c abutting against the feed cam face and a holding chuck 10 holding a lead and rotating upon receiving a rotation drive force of the rotary part, which is configured so that the lead held by the holding chuck is pulled out from the ball chuck due to the advance operation of the slider when the abutting part moves along the feed cam face according to rotation of the rotary part and the abutting part falls into the drop difference.
IPC 8 full level
B43K 21/033 (2006.01); B43K 21/16 (2006.01)
CPC (source: EP KR US)
B43K 21/033 (2013.01 - EP KR); B43K 21/085 (2013.01 - KR); B43K 21/16 (2013.01 - KR); B43K 21/18 (2013.01 - EP KR US); B43K 21/22 (2013.01 - EP KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3960485 A1 20220302; EP 3960485 A4 20230104; CN 113573915 A 20211029; CN 113573915 B 20230131; JP 2020097210 A 20200625; JP 7262294 B2 20230421; KR 102560350 B1 20230728; KR 20210113189 A 20210915; TW 202100371 A 20210101; TW I818159 B 20231011; US 11884093 B2 20240130; US 2022184995 A1 20220616; WO 2020217682 A1 20201029
DOCDB simple family (application)
EP 20795528 A 20200220; CN 202080021206 A 20200220; JP 2019086686 A 20190426; JP 2020006910 W 20200220; KR 20217019180 A 20200220; TW 109107930 A 20200311; US 202017603426 A 20200220